WASHINGTON – Gerald Wallace made a driving layup with 2.5 seconds remaining in overtime and the undermanned Boston Celtics broke a 10-game road losing streak last night with a 113-111 win over the Washington Wizards, who wilted yet again in their long and laborious quest to get above .500.

Jeff Green scored a season-high 39 points, including career-highs in 3-pointers attempted (16) and made (8), and rookie Phil Pressey added a career-high 20 points for Boston. The Celtics played without Rajon Rando, Avery Bradley and Jerryd Bayless and blew a 19-point first-half lead before winning for only the second time in 14 games.

John Wall had 28 points, 11 rebounds and 10 assists for his second career triple-double for the Wizards, who haven’t won a game to move above .500 since Halloween 2009. They have failed to win this season at 0-0, 9-9, 14-14, 19-19 and 20-20, and the milestone has become such a psychological hurdle that Coach Randy Wittman this week had to caution against thoughts that “all of a sudden fairy dust is going to fall on us if we get over .500.”

Wall went 9-for-29 from the field and he missed a potential game-winning, contested 3-pointer at the buzzer in overtime.

With Rondo sitting out the second half of a back-to-back in his return from major knee surgery and Bradley out for two weeks after spraining his right ankle against the Miami Heat the night before, Boston Coach Brad Stevens started a lineup consisting of a backup point guard – undrafted rookie Pressey – and four forwards.

In addition, recently acquired guard Bayless missed his second consecutive game with a sprained left big toe and is day to day. Chris Johnson and Vander Blue, both playing on 10-day contracts, played together as the Celtics’ backcourt tandem for a stretch in the second quarter.

It was the NBA debut for Blue, who was signed earlier in the day. Johnson finished with nine points.

The Wizards again came out like a team that can’t handle mediocrity, or, even worse, one that will always falter at the thought of actually becoming a winning team. They played the first half as if in slow motion, falling behind by 13 points in the first quarter while giving up open 3-pointers.

More Wizards malaise: A needless foul by Trevor Booker 90 feet from the basket allowed Kris Humphries to make a pair of free throws with seven seconds remaining in the second quarter to give Boston a 61-43 halftime lead.

But the Celtics looked like their patchwork selves in the third quarter, committing a pair of offensive fouls during an 11-0 Wizards run. Martell Webster gave the Wizards their first lead of the game with a four-point play that made the score 88-87 with 6:37 to play in regulation, but the Celtics answered with five straight points.

The score was then tied at 92, 94, 96 and 99, and neither team could make a clutch shot in the final minute of regulation.

Pressey had made only 6 of 38 3-pointers all season, but he went 5-for-6 from 3-point range against the Wizards. His 3-pointer in the final minute of overtime gave the Celtics a 111-108 lead. He fouled out with 13.9 seconds remaining.

The Wizards tied the game when Marcin Gortat made 1 of 2 free throws with 13.9 seconds left in the extra period, but Wallace came back with the winning basket.

NOTES

∎ Boston’s 10-game road skid was its longest since a 12-game streak in 2007.